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#!/usr/bin/env python
# Copyright (c) 2009 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
# This script concatenates in place JS files in the order specified
# using <script> tags in a given 'order.html' file.
from HTMLParser import HTMLParser
from cStringIO import StringIO
import os.path
import sys
class OrderedJSFilesExtractor(HTMLParser):
def __init__(self, order_html_name):
HTMLParser.__init__(self)
self.ordered_js_files = []
order_html = open(order_html_name, 'r')
self.feed(order_html.read())
def handle_starttag(self, tag, attrs):
if tag == 'script':
attrs_dict = dict(attrs)
if ('type' in attrs_dict and attrs_dict['type'] == 'text/javascript' and
'src' in attrs_dict):
self.ordered_js_files.append(attrs_dict['src'])
def main(argv):
if len(argv) < 3:
print('usage: %s order.html input_file_1 input_file_2 ... '
'output_file' % argv[0])
return 1
output_file_name = argv.pop()
full_paths = {}
for full_path in argv[2:]:
(dir_name, file_name) = os.path.split(full_path)
if file_name.endswith('.js'):
full_paths[file_name] = full_path
extractor = OrderedJSFilesExtractor(argv[1])
output = StringIO()
for input_file_name in extractor.ordered_js_files:
if not input_file_name in full_paths:
print('A full path to %s isn\'t specified in command line. '
'Probably, you have an obsolete script entry in %s' %
(input_file_name, argv[1]))
output.write('/* %s */\n\n' % input_file_name)
input_file = open(full_paths[input_file_name], 'r')
output.write(input_file.read())
output.write('\n')
input_file.close()
output_file = open(output_file_name, 'w')
output_file.write(output.getvalue())
output_file.close()
output.close()
if __name__ == '__main__':
sys.exit(main(sys.argv))
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